IA gets some fairly creepy companions an anarchist, a lycanthrope,a hive mind speaker, an untrained secret Force user,an ancient shady droid. They will all make sure that you are not mentally sane anymore by the end of your storyline.

So much this

"Laws should be made of iron, not of pudding."

“A good act does not wash out the bad, nor a bad act the good. Each should have its own reward.”

Well, I've only experienced 2 sets so far, SW and SI, and to me the SW companions are far superior to the SI.

The SW companions makes sense, a Slave an officer a Jedi and a troper kinda guy.

At the same time, the SI get's the horrible Khem monster, who I would have sent out the airlock if I could, for blocking my view so often, a Pirate....? and some Teenage wannabe Jedi, that's the current companions I've gotten for thoose classes so far.

Heck I prefere my SI over my SW for gameplay, but the SW story and sidekicks are just better by far.

I love Khem. He's amazing. Don't you dare call him horrible. Wasn't a fan of the pirate, but I really liked the last two (especially the last guy).

First we get a bald chick who is a compulsive liar and manipulator. And downright anarchistic, and she's one of the normal ones!
Then we get an Imperial Diplomat who has joined the hive mind of a giant ant civilization. With freaky eyes and everything! And he talks about things he sees, smells and hears. Honestly i think he's on acid most of the time.
Then we get a Doctor, another from Imperial Inteligence. And he seems pretty normal and all UNTIL YOU CATCH HIM FEASTING ON THE REMAINS OF A HUMAN AS A FREAKING RAKGHOUL. Hes a were-rakghoul!
Then we get perhaps our most normal companion. A low member of the imperial militairy who is secretly force sensitive. And she desperately wants to be cool like you.
And last, but not least. An Ancient droid who delights in killing and learning new ways to kill. Completely devoid of sympathy, the only reason she hasnt killed you in your sleep yet with a toaster is some restraining bolt. And she's trying hard to bypass it.

And this is all put on the same ship. If this was real life you'd have all major networks fight eachother over who gets to put this on the air.

Kaliyo - She just loves to blow stuff up ans beat the shit out of people
Vector - Superintelligent and polite Hive-mind-guy
Doctor Lokin - Yeah... the Doctor is in the house...
Raina Temple - Just really cute and seems to have some really interesting story
SCORPIO - as allready said HK-47 in female and a super sexy voice

I laugh every single time he or any Jawa says anything. Personal second best for me has to be M1-4X simply because he and my commando kicked the crap out of a lot of stuff (including soloing some 4+ quests) in beta.

On my bh alt (like lvl 44 now i think) i tried using blizz as soon as i got him, completely unusable, died faster than torian does and hes a dpser. When I got skadge he was usable as soon as I got him, takes alot less damage than poor little blizz :\ both in starter gear as soon as I got them. best comparison I could reasonably do on a non lvl capped alt.